Q115
If the width of the gallery does not exceed 3 meter, and the depth of the seam not exceeding 60 m, the distance between centre of adjacent pillars shall not be less than . . . . . . . . meters.
A.
15
B.
18
C.
19.5
D.
12
AnswerAnswer: Option D
Solution
Answer: Option D
No explanation is given for this question Let's Discuss on Board